A Bar Magnet Is Held Vertically with Its Upper End

question 59

Multiple Choice

A bar magnet is held vertically with its upper end a little bit below the center of a horizontal metal ring. The upper end of the magnet is its north pole, as shown in the figure. The bar magnet is now dropped. An observer views the ring from above its center. To this observer, how will the induced current in the ring behave as the magnet falls?

• A) The current will flow clockwise and be increasing.
• B) The current will flow clockwise and be decreasing.
• C) The current will flow counter-clockwise and be increasing.
• D) The current will flow counter-clockwise and be decreasing.
• E) The induced current will be zero.

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Definitions:

Deduction

A logical process in which a conclusion follows necessarily from the premises presented, moving from general principles to specific instances.

Abduction

Reasoning from an observed effect to possible causes.

Hypothesis

A tentative explanation or prediction that can be tested through research and experimentation.